Estimation of blade loads for a variable pitch vertical axis wind turbine from particle image velocimetry

Journal Article (2021)
Author(s)

Bruce LeBlanc (TU Delft - Wind Energy)

Carlos Simao Ferreira (TU Delft - Wind Energy)

Research Group
Wind Energy
Copyright
© 2021 B.P. LeBlanc, Carlos Ferreira
DOI related publication
https://doi.org/10.1002/we.2674
More Info
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Publication Year
2021
Language
English
Copyright
© 2021 B.P. LeBlanc, Carlos Ferreira
Research Group
Wind Energy
Issue number
2
Volume number
25
Pages (from-to)
313-332
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Abstract

This paper presents the flow fields and aerodynamic loading of a two bladed H-type vertical axis wind turbine with active variable pitch for load and circulation control. Particle Image Velocimetry is used to capture flow fields at six azimuthal positions of the blades during operation, three upwind and three downwind. Flow phenomena such as dynamic stall and tower shadow are captured in the flow fields. The phase-averaged velocity fields and their time and spatial derivatives are used to calculate the normal and tangential loading at each position for each pitching configuration using the Noca formulation of the flux equations. The results show the effect of load shifting from the upwind to downwind region of the actuator using pitch and the effects of dynamic stall on the blades. The results also provide an unique database for model validation.